What is the #1 risk factor for a stroke?

The leading risk factor for stroke is hypertension, or high blood pressure. This condition significantly increases the risk of both ischemic and hemorrhagic strokes. Hypertension can cause damage to blood vessels over time, making them more susceptible to rupture or blockage, which can lead to insufficient blood flow to the brain.

Moreover, hypertension often goes unnoticed since it can be asymptomatic, leading to higher prevalence and untreated cases that increase stroke risk. Managing blood pressure through lifestyle changes and medication is crucial in stroke prevention.

While other factors like diabetes, smoking, and high cholesterol also contribute to stroke risk, they are considered secondary compared to hypertension. For instance, while smoking can damage blood vessels and raise stroke risk, it is typically not as significant as high blood pressure when it comes to overall prevalence and impact. Thus, recognizing hypertension as a primary risk factor is critical for effective stroke prevention strategies.